This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
| n | a(n) |
|---|---|
| 1 | 3 |
| 2 | 16 |
| 3 | 102 |
| 4 | 668 |
| 5 | 4715 |
| 6 | 34813 |
| 7 | 265015 |
| 8 | 2067152 |
| 9 | 16413535 |
| 10 | 132200223 |
| 11 | 1076692515 |
| 12 | 8849480283 |
| 13 | 73288053795 |
| 14 | 610860050965 |